General Specifications:
• Dual Post Design
• Two Holes Per Post
• M5x5 Post Dimensions
• Ø2.8mm Post Holes• M5x5 Post Dimensions
• 9mm Deep Juice Well
• 7.5mm at Angled Airflow Slots
• 2ml Maximum Liquid Capacity
• 2ml Maximum Liquid Capacity
• Kennedy 24 = 1.4ml Capacity
• 24mm Outside Diameter
• Widebore POM Chuff Cap
• 12mm Minimum ID
• 15.5mm Maximum ID
• Anti-Spitback Sieve
• 31mm Height w/ POM Chuff Cap• 15.5mm Maximum ID
• Anti-Spitback Sieve
• 23mm Height w/o POM Chuff Cap
• 40g Total Weight w/ 510 Adapter
• 4 x 1.5mm Hex Drive Post Screw
• 2 x M2x7.5 Adjustable Side Airflow Slots
• Support for Single or Multiple Coils
• 2 x M2.5x9 Adjustable Angled Side Airflow Slots• Angled Deck Slots Mimic Bottom Airflow
• Brass 510 Positive Pin• M3×0.5 Slotted Shoulder Screw
• HD=5.0 | HH=1.5 | SD=3.5 | SL=4.0 | TL= 4.5
• Cu/Brass/SS Top Caps• HD=5.0 | HH=1.5 | SD=3.5 | SL=4.0 | TL= 4.5
• Serialized at Top Cap
[ M5x5 Posts + Angled Airflow Slots + Brass Postive Pin ]
Simple Test Build:
Twisted dual 24g 316L Ø3.25mm 7/6 tension wrap. Expected resistance of 0.08Ω to 0.09Ω verified on a Scotts Mod ORDTS.2 firing multimeter.
[ Delco Wire Winding Certified 316L Stainless Steel Wire ]
Positive Impressions:
• Able to support a single 4mm z-coil in between the posts.
• Combination angled and side airflow options result in a signature draw.
• Large well capacity increases vape time by decreasing filling frequency.
• Negative post is milled as part of the deck and is notched to increase well capacity.
• Relatively small chamber + widebore chuff cap = Suprisingly flavorful draws.
• Improves upon nearly every aspect of its predecessor and then some.
Negative Impressions:
• Removing the AFC ring damaged the O-ring.
• Treat O-rings with MOLYKOTE 111 or equivalent.
• Replace with lower durometer 18x1.5N50 or 18x1.5S60.
• Replace with reduced inside diameter 16.5x1.5V75 or 17x1.5N70.
• Replace with reduced cross section 18x1.4N70 or 18x1.4S70.
• Accumulation of juice along the top of the anti-spitback sieve.• Replace with lower durometer 18x1.5N50 or 18x1.5S60.
• Replace with reduced inside diameter 16.5x1.5V75 or 17x1.5N70.
• Replace with reduced cross section 18x1.4N70 or 18x1.4S70.
• Replace with MCV Elite/Supreme/Xmas or original Fuel chuff cap.
• Perform a positive pressure prime before a negative pressure draw.
• Longer 510 prevents the deck from seating flush on certain devices.• Perform a positive pressure prime before a negative pressure draw.
• Shim with 510 M22x1 POM spacer or equivalent (e.g. finned heatsink).
• Would have preferred a 510 positive protrusion ≥ 1mm.• Replace shoulder screw with extended thread equivalent.
[ Fuel 2.0 + Roundhouse + 16.5x1.5V75 AFC O-ring + 510 M22x1 POM Spacer ]
Additional Commentary:
To achieve a similar flavor profile to the original Fuel, it may be necessary to build the Fuel 2.0 with greater surface area in order to counter its larger chamber size and higher air-to-vapor ratio. Fortunately, the Fuel 2.0 excels with high coil mass and high power owing to its combination airflow system which features outstanding direct-to-coil coverage. An oft overlooked benefit of this system is that it is particularly forgiving with coil placement: No matter how your coils are aligned, they will receive sufficient airflow coverage for vapor and flavor production. While I listed the AFC O-ring as a negative, the positive is that it forms a superior leak-resistant seal. I will continue to test fit a number of alternative O-rings in different materials (silicone, Buna-N, Viton, et al) and in different durometers to find the best compromise between ease of AFC ring removal and sealing ability. The Fuel 2.0 is not without additional fault. Like the original Fuel, its 510 threads are longer than those of other atomizers. Single tube direct-to-battery mechanicals (e.g. Kennedy Roundhouse) are particularly prone to the inability of the Fuel 2.0 to seat flush along the top of the mod. While the use of brass for the 510 positive is applauded, the inherent properties of the alloy mandate periodic maintenance to preserve high conductivity. Positive pin protrusion was approximately 0.5mm. I would have liked to seen a greater protrusion and will seek out a replacement brass shoulder screw with either a taller head height and/or extended threads to further increase safety margins. The non-removeable, anti-spitback sieve is machined as part of the chuff cap. While it does impair visual feedback of the deck, it also performs its intended purpose. The test build above was specifically twisted and wicked loose to induce spitback of which none was noted. Although no issues were noted with fast dripping 100% VG through the chuff, filling by decapping is recommended in order to prevent the excessive accumulation of e-liquid along the ledges of the sieve. Oversized posts provide high conductive mass and support for large post holes at the expense of deck space. Including a complete set of replacement O-rings and post screws is attention to detail. A drilled out positive post along with a bottom feed pin is all this RDA needs to transform into a squonking gem. The Fuel 2.0 is exactly that: An incremental improvement upon the original Fuel. With an air intake system providing massive coil coverage and a short chamber moving vapor quickly through a wide exhaust, the Fuel 2.0 is one of the better combination cloud + flavor atomizers on the market.
[ No Overhang on MCV Copper Raptor + Sterling 925 Silver Contacts ]
Included Accessories:
• 510 Drip Tip Adapter
• Machined from POM
• Standard M8.5 Bore ID
• 1 x 12x1.5N70 O-ring
• Fits Within Chuff Cap
• 1 x 18x1.5N70 O-ring• Standard M8.5 Bore ID
• 1 x 12x1.5N70 O-ring
• Fits Within Chuff Cap
• For Deck & Top Cap
• The O-ring Store N1.50X018
• 1 x 12x1.5N70 O-ring• The O-ring Store N1.50X018
• For Chuff Cap | 510 Drip Tip Adapter
• The O-ring Store N1.50X012
• 4 x 1.5mm Hex Drive Post Screw• The O-ring Store N1.50X012
• 1 x 1.5mm Hex Key L-wrench
• For Hex Drive Post Screws
• PB Swiss Tools Item 210.1.5
• PB Swiss Tools Item 210.1.5
[ Note the Complete Set of Replacement O-rings and Post Screws ]
Authorized US Resellers:
• VapeHappy in Nevada
• Dragon's Den Vapor in Florida
• Vapin Tonight LLC in Indiana
tl;dr: The Fuel 2.0 combines a large capacity well with a short chamber and superior airflow in an easy-to-build RDA for both flavor and clouds
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